Vehicle-mounted sign



FIG. 1 is a top, left, front perspective view of a vehicle-mounted sign, showing my new design;

FIG. 2 is a bottom, right, rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a right side view thereof; and,

FIG. 8 is a left side view thereof. 

CLAIM The ornamental design for a vehicle-mounted sign, as shown. 